Spray nozzle



June 20, 1950 c, ow 2,511,945

SPRAY NOZZLE 1 Filed Nov. 19, 1947 Patented June 20, 1950 SPRAY NOZZLE Arthur" CfRowley, Drexel Hill, Pa., assignor to Globe Automatic Sprinkler Company, Philaf delphia, Pa., a corporation of Pennsylvania ApplicationNovember 19, 1947, Serial N0. 786,889

This invention relates to spray nozzles iior automatic sprinkler systems, and'the principal object of the invention .is to provide a nozzle, of this class of simple and inexpensive construction and highly eflicient operating characteristics;

A more specific objectof the invention is to provide a spray nozzle wherein a novel combination of velocity and vertical action is utilized to obtain a highly efiicient spray formation.

The invention will be more readily understood by reference to the attached drawings, wherein:

Fig. 1 is a front elevational view 'of a nozzle made in accordance with ,the'invention:

Fig. 2 is a side elevational'view of ,the nozzle;

Fig. 3 is a sectional .view. on the line 3 -33 Fig. 2; Fig. 4 is a sectional view on the line j44 Fig. 3,

and V v Fig. 5 is a, view in perspective of one of the individual elements of the assembly.

With reference to the drawings, the embodiment of the invention therein illustrated comprises a body member l having a; through bore suitable wrench to thread the body member I into the sprinkler system as mentioned.

Beyond the flange 4 is an externally threaded cylindrical portion 6 which is. adapted to receive a correspondingly internally threaded dome .I which embraces the discharge end of the bore 2 of the body member I as illustrated. The

dome I has a discharge port 8 in alignment with the bore 2 of the body member I and normally this port 8 will be closed by a cap 9 which is maintained in port sealing position by means 5'Claims. (01. 299-415) of a linkage designated generally by the reference numeral II, said linkage including a thermo-sensitive release element I2 which when subjected to temperatures above a predetermined maximum will act to release the linkage so as to permit the fluid pressure within the system to unseat the cap.

Referring more specifically to the linkage Il it will be noted that it comprises a transverse member I3, the opposite downwardly deflected ends I 4 of which are engaged under the intermediate portions of two levers I5I5. These levers are confined at one end by an inturned flange I6 on a sleeve I I which is threaded onto the outer or discharge end of the dome I. The

outer hooked ends I 8--I8 of the levers I5 are normally retained in the position shown in Fig. 3 by a retaining member I9 with which the said hooked ends are interlocked as shown. The member I9 is supported in the lever-retaining position by a strut consisting of a screw 2I threaded into the member I9, the thermo-sensitive or heat-responsive element I2, and a spherical element 22 which seats upon the member I3. It will be noted that the head end of the screw 2I seats against the heat-responsive element I2, that the latter in turn seats against the sphere 22, and that by adjusting the screw 2| the member I9 may be forced upwardly against the hooked ends of the levers I5, so that the strut under compression acts to tension the levers I5 in the longitudinal direction. It will be noted also that a proper location of the sleeve IT in the axial direction will cause the levers, when their outer hooked ends are confined by the member I9 as illustrated, to bear forcibly against the ends of the member I3 so as to place the latter under tension and cause it to bear forcibly upon the cap 9. Thus the entire linkage assembly acts under tension (with the exception of the aforedescribed strut which is under compression) to hold'the cap 9 tightly in the port sealing condition. When, under these circumstances, the heat-responsive element I2 is actuated by subjection to a relatively high temperature to release the linkage, the aforesaid tension acts to disintegrate the linkage assembly and to immediately release the cap 9.

It is to be noted that the heat-responsive element I2 consists in its present form of a cupshaped container 23 in the bottom of which is placed a body 24 of a solid heat-fusible compound, such as a solder, and a plunger 25 which fits loosely into the cup 23 and seats upon the solder 24. Normally the solder functions to hold the plunger in an extended position as shown, but when the solder changes to liquid state the plunger is free to move into the cup, thereby causing collapse of the strut assembly and consequent release of the entire linkage system.

The linkage system II in itself forms no part of the present invention and is described and claimed specifically in my co-pending application Serial No. 786,888.

The discharge end of the bore 2 at the inner end of the body member I which is embraced hv the dome I is defined by two segmental flanges 26-26 which are arranged opposite to each other as shown in Fig. 4 so as to provide between the adjoining ends thereof, radial passages 21-21.

3 Secured to the inner end of the body member I in the interior of the dome l is a nozzle element 28, the form of which may be more readily understood by reference to Figs. 3 and 5. This element 28 consists in efiect of a flat disc 29 having a central aperture 3| from which a frustoconical nozzle extension 32 projects, as best shown in Fig. 3. In assembly the disc 29 seats upon the upper edges of the segmental flanges 2526 with the port 3| and nozzle projection other ends with the admission port by way of the spaces between the proximate ends of the first named flanges, and means for closing the latter ends of said channels.

2. A spray nozzle according to claim 1 wherein the channel-closing means consists of two screws securing the nozzle element to the said body memb er.

3. In a spray nozzle of the type described, a body member having a chamber with a discharge port at one side, a nozzle element projecting into the-chamber from the opposite side toward said discharge port and defining the terminal end of an admission passage within said member, the open inner or discharge end of the nozzle element being directed toward but lying remote to "thesaid-discharge port, a port at the base of said The relative arrangement of the flanges 26 and v 33 and the screws 35 is best shown in Fig. 4. As therein illustrated these elements coact to form two concentric arcuate channels 36-30, one end of each of'whichisclose'd'by'oneof the screws 35 while the other ends terminate in open space withinthe dome 1. The openings 27 between the flanges 26 afiord access to the inner ends of these channels from the bor'e'2ofthe body member. It is 'to be noted also that the segments '33 are spaced inwardly'from the Wall'oi the dome I so that therebetwe'ensecondary'channels 31 and 33 areformed into which fluid discharging from the open ends of the'channe1s'36 'maypass and from which the said fluid may discharge also into open space withinthedom'e I. I

It will be apparent that, assuming a flow of water from the sprinkler systemthrough the bore '2, the ports 21 and the channels 36, a vortical movement of the water will thereby be set up in the interior of the-dome 1 and that this vortex movement will be stimulated by passage of a portion of the water into and through the secondary segmental channels 37 and 38. Another .part of the water so flowing through the bore '2 will discharge directly and axially through the nozzle 32 and directly toward the discharge opening 8 of the dome "I. This high velocity jet discharging from the nozzle'32 will strike themass of water in the aforedescribed vortex'which is being continuously contracted radially by the compound arch ofthe inner surface of the demo 1 toward the discharge opening 8 whereby the entire water mass is broken up into fine particles and passes as such from the discharge opening 8.

The device constitutes a relatively inexpensive and highly eifective spray nozzle well adapted for use in sprinkler systems of known type. It will be apparent that there may be some modification in the details of construction without departure from the invention as defined in the appended claims.

-I claim:

1. In a spray nozzle of the type described, a body memberhaving a chamber with aligned discharge and admissionports at opposite sides respectively, segmental flanges projecting into the chamber said admission port, a nozzle element seating on said flanges and having segmental flanges spaced outwardly from the flanges first named and forming with the latterarcuate channels extending around the axis of the nozzle element and communicating at one end .withsaid chamber, said channels communicating at their nozzle element opening laterally into the chamber from said passage, means associated with the said lateral port for directing admitted fluid into a 'vortic'allpath within said chamber, saidfl'iq'uiddirefct'ing means including a radial extension on the "nozzle element having a 'marginallaziially directed flange "forming "with adjoining surfaces of the body member a curved channel extending around the base of the nozzle and opening at one end 'to'the chamber and a'tthe other 'end to said port.

4..[na spray'nozzle (ifthe type described, a body member having achaniber with a discharge port at one 's'ide,"a nozzle element projecting into the chamber fromt'lzi'e opposite side towards said discharge p'orta'nd defining the terminal end of an admission passage in said'meniber, a plurality of'por'ts at the base of said-nozzle element opening laterally"into"the chamber from said passage, and flanges on said nozzle element forming circumferentially'extending'ch'annels into which the said lateral ports open aridby way of whichadmitted fluid is directed into a vortical path within said chamber. 1

5. In a 'spray nozzle of the typedescribed, .a bodymemb'erhaving a-ch'aniber with a discharge port'at'on'e side,'a"nozz'le element projecting .into the chamber fr'omthe opposite side towardsaid discharge'po'rt and defining thelterminalend of an'admission passage in said chamber, and a .port at the base of said nozzle element openinglla'terally into the chamber from saidpassage, the'inner wall surface of said chamber converging toward the discharge port and fcomp'rising twov adjoining substantially semi-circular .sections of differing radius of which the section of 'lesser .radius terminatesin the dischargeport.

ARTHUR CQROWLEY.

REFERENCES CITED The following references are of record in'the file of this patent:

Certificate of Correction Patent No. 2,511,945 June 20, 1950 ARTHUR o. ROWLEY It is hereby certified that error appears in the printed. specification of the above numbered patent requiring correction as follows:

Column 1, line 8, for velocity and vertica read velocity jet and eort'ical;

and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Oflice.

Signed and sealed this 26th day of September, A. D. 1950.

THOMAS F. MURPHY,

Assistant Oomme'sse'oner of Patents. 

